Circle Freezes $12.6 Million in Confidential USDC, Raising DeFi Control Concerns

Circle, the issuer of USDC, has blacklisted Zama's confidential USDC contract on Ethereum, resulting in the freezing of approximately $12.6 million in cUSDC tokens. This action prevents holders from redeeming their confidential tokens for standard USDC. The incident raises questions about issuer control and potential surveillance risks within privacy-focused Decentralized Finance protocols.